Generation of Subwavelength Plasmonic Nanovortices via Helically Corrugated Metallic Nanowires

Changming Huang, Xianfeng Chen, Abiola O. Oladipo +2

We demonstrate that plasmonic helical gratings consisting of metallic nanowires imprinted with helical grooves or ridges can be used efficiently to generate plasmonic vortices with…